Light ring for webcam

thingiverse

Light Ring for Webcams Mounting The primary goal of a light ring is to provide a smooth and well-defined illumination for the objects being captured. By having the light emanate from a circle around the camera, you can ensure that no visible shadows are cast from the camera's perspective. ### Required Materials To print: - front.stl - back.stl - diffuser.stl (white or semi-transparent plastic) Consumables: - 9 x 5mm LEDs (white) - Power source: 25-30V, <0.1A Tools: - Pliers - No soldering required ### How to Use Begin by printing the "front" part. Attach 9 x 5mm LED's (preferably white) by inserting their legs through the small holes, with the LED facing the flat side of the ring. Ensure all the LEDs are placed in the same direction, with the anode (long leg) always on the clockwise side. Pull out the two closest legs from two diodes on the side with the opening that doesn't have a diode just below it. Connect all the diodes together loosely by wrapping their legs together to form a chain around the light ring. (Important) Make sure only connect long-legs to short-legs, never two legs of the same length to each other. Attempt to attach the power source to the light ring. The positive voltage (+) should be connected to the long leg sticking out and negative voltage (-) to the short leg. Note that if you don't use white LEDs, then the total voltage should be lower. If the ring is not illuminated correctly, it may be due to missed connections or incorrect polarity. It could also be that the power source is too weak or that one of the LEDs has been burned out. Once the ring is shining properly, tighten the connection between the legs using pliers. Cut away the excess and push the remainder down so it fits snugly. Finally, attach the back-side by pushing it in when aligned to the two holes, then rotating 90 degrees. It should stay attached if not, you may need to push down some leg that is still in the way. The diffuser goes on top of the LEDs and is used to diffuse the light so as to avoid sharp glares. Ensure you print it in a light-colored or semi-transparent plastic. White PETG works well for me. ### How to Modify You can change the parameters of the object by opening the file light_ring.scad using the program "OpenSCAD" that can be downloaded from the internet: http://www.openscad.org/ Go to one of the lines containing the parameters: - inner_r = 30/2; // Radius of hole for camera - outer_r = inner_r + 10; // Outer radius of center part - pin_r = 1; // Thickness of LED legs. Increase if holes are too small - pins = 9; // Number of LEDs Select which part to render at a time by commenting out all but one of the parts: - /* Diffuser */ - translate([0,0,-30]) diffuser(); - /* Front */ - front(); - /* Back */ - translate([0,0,30]) rotate(180,[1,0,0]) back(); Next, press F6 to render it and use "File > Export > Export STL" to export your STL file.